1.8521 Steel

Steel name: 1.8521
Diagram No.: 1101
DIN designation: 15CrMoV5-9
Mat.No. (Wr.Nr.) designation: 1.8521
Chemical composition in weight %: 0.13-0.18% C, <0.40% Si, 0.80-1.10% Mn, <0.025% P, <0.030% S, 1.20-1.50% Cr, 0.80-1.10% Mo, 0.20-0.30% V
Steel group: Nitriding steel
Applications: Al-free nitriding steel grade for relatively low nitriding hardnesses and relatively great nitriding depths. Suitable for gear wheels, cylinders, drills, connecting rods, shafts, extruders, guides, straightening rolls, thread gauges.
Comment: The legend: Tempering diagram: Pre-treatment: 980 C, 30 min/air. Hardening: 980 C, 30 min/oil. Heat treatment cross-section: 60 mm dia.
Reference: Not shown in this demo version.

Heat Treatment
Hardening: 940 980oC/oil/polymer, water
Tempering: See the diagram

Diagram Tempering Temperature - Mechanical Properties

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